Another option, he said, is a heat pump with a built-in electric resistance back-up heating element, which could be pricey to operate.

Source: https://www.cbc.ca/radio/i-want-to-cut-my-carbon-emissions-living-in-canada-s-hinterlands-doesn-t-make-it-easy-1.6845110?cmp=rss

For quiet operation and fast heating, this uses a ceramic heating element so you can get toasty in no time.

Source: https://boingboing.net/2023/01/25/get-toasty-warm-this-winter-with-this-sleek-portable-heater.html